'Troubling' in the Bible

Then Daniel, whose name was Belteshazzar, was at a loss for a time, his thoughts troubling him. The king made answer and said, Belteshazzar, do not be troubled by the dream or by the sense of it. Belteshazzar, answering, said, My lord, may the dream be about your haters, and its sense about those who are against you.

After this, in my vision of the night, I saw a fourth beast, a thing causing fear and very troubling, full of power and very strong; and it had great iron teeth: it took its food, crushing some of it to bits and stamping down the rest with its feet: it was different from all the beasts before it; and it had ten horns.

As for me, Daniel, my spirit was pained because of this, and the visions of my head were troubling me.